Prescription Drugs to Quit Smoking: Full Guide

When over-the-counter NRT isn’t enough, prescription medications offer a more powerful pharmacological approach. Two medications are FDA-approved for smoking cessation, and a promising new option is approaching approval. Here’s what you need to know.

Varenicline (Chantix / Champix)

Varenicline is the most effective single medication for quitting nicotine. It works as a partial nicotine receptor agonist — it partially stimulates the same brain receptors that nicotine does, which reduces both withdrawal symptoms and the rewarding effects of nicotine if you relapse.

Effectiveness: Clinical trials show varenicline approximately triples quit rates compared to placebo. It’s consistently shown to be more effective than single NRT products and bupropion.

How to use: Start 1 week before your quit date. Days 1–3: 0.5mg once daily. Days 4–7: 0.5mg twice daily. Day 8 onward (quit date): 1mg twice daily. Treatment duration is typically 12 weeks, with an optional additional 12 weeks to prevent relapse.

Side effects: Nausea (most common, affects about 30% of users and typically improves over time), vivid dreams, insomnia, headache, and constipation. The FDA previously required a black box warning about neuropsychiatric effects, but this was removed in 2016 after large-scale studies found no increased risk compared to NRT or placebo.

Access: Requires a prescription from your doctor. Many insurance plans cover it with a low copay. Telehealth services can often prescribe it after a virtual consultation.

Bupropion (Zyban / Wellbutrin)

Bupropion is an antidepressant that also reduces nicotine cravings and withdrawal symptoms. It works by inhibiting the reuptake of dopamine and norepinephrine — two neurotransmitters affected by nicotine withdrawal.

Effectiveness: Approximately doubles quit rates compared to placebo. Less effective than varenicline when used alone, but can be combined with NRT or varenicline for enhanced results.

How to use: Start 1–2 weeks before your quit date. 150mg once daily for 3 days, then 150mg twice daily. Treatment duration is 7–12 weeks, with an optional maintenance period.

Side effects: Insomnia, dry mouth, headache, and agitation. Bupropion lowers the seizure threshold and is contraindicated for people with seizure disorders or eating disorders.

Best for: People who also have depression, as it addresses both conditions. Also a good option for people who experienced intolerable side effects with varenicline.

Cytisinicline (Emerging)

Cytisinicline is a plant-derived partial nicotine receptor agonist currently under FDA review. Phase 3 trials have shown promising results, with quit rates comparable to varenicline but potentially fewer side effects. It could become available in the U.S. as early as 2026.

How to Access Prescription Options

Talk to your primary care doctor or use a telehealth service. Most providers will prescribe cessation medication after a brief consultation about your nicotine use history. Many insurance plans cover these medications with low out-of-pocket costs. Some state quitlines also provide free medication.

When to Consider Prescriptions

Consider prescription medication if you’ve tried NRT and it wasn’t sufficient, you’ve made multiple quit attempts without lasting success, you use nicotine heavily (within 5 minutes of waking), or you have co-occurring depression or anxiety.

For a comparison of all quit methods, see our comprehensive methods guide. For Chantix alternatives, we have a dedicated guide.

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